SharePoint List Assigned To column not expanding Office365 groups

Hello everyone!

I have an Office365 group "Admins" that has around 30 users. This group is an owner on a SharePoint Task List.

When trying to assign a Task to someone in the "Assigned To" column, it's like it doesn't expand the group and I can't search for any of the users in the group. However when I add the user instead of the group to the Task List permissions, I am able to find them.